I'm familiar with Tool - A friend in high school was crazy about them and had me listen to some of their songs. It's cool, just not entirely my thing.
Now that I think about it, I haven't really been listening to Metal in the last few years but I've shifted more towards stuff like Two Steps From Hell. But I do like some Twisted Sister every now and then. :P

Anyway, I hope you had a great time, with or without work. :)

I'll see if I can come up with something now. If not, I'll see about posting after I've had a couple of hours of sleep.